Eccentric press



Oct. 29, 1929. M, LUBlCH 1,733,162

ECCENTRIC PRES S Filed Oct. 29, 1928 Patented Oct. 29, 1929 UNITE STATESPATENT OFFICE MAX LUIBICH, F EBERSBACH-ON-THE-FILS, GERMANY, ASSIGNOR TOTHE FIRM L. SCHULER A.G., 0F GOPPINGEN, WURTTEMBERG, GERMANY be heldthereon securely.

ECCENTRIC PRESS Application filed October 29, 1928, Serial No. 315,907,and in Germany'June 6, 1928.

My invention refers to coupling means and more especially to meanswhereby a cam, disc or other member can be fixed on a shaft or journalin any desired angular position and The. invention is particularlyuseful in mounting cams or eccentrics on the shaft or journal of aneccentric press.

It is an object of my invention to provide coupling and fixing means ofthe kind aforesaid which allow a simpler and easier change of positionof the part of be fixed on a shaft or journal.

In eccentric presses if the stroke of the press shall be varied theeccentric member or cam must be arranged for angular displacement on aneccentric part of the driving shaft. As

' a rule the displaceable eccentric member is coupled with the shaft bymeans of a clutch coupling, and if the eccentric member shall bedisplaced angularly it is shifted axially in order to disengage it fromthe shaft or j ournal.

According to the present invention the coupling, disengaging andshifting can be operated in a simpler and quicker manner.

In the drawings aifixed to this specification and forming part thereof adevice embodying my invention is illustrated diagrammatically by way ofexample.

In the drawings,

Fig. 1 is an elevation of part of a journal or shaft of an eccentricpress with the eccentric member and part of the clutch shown in axialsection.

Fig. 2 is a cross-section on the line 22 in Fig. 1, and

Fig. 3 is an end view.

Referring to the drawings a is a journal fixed eccentrically on the maindriving shaft of the press. I) is the cam or eccentric member whichwould be freely rotatable about the journal a, save for the couplingmember 0 mounted on the reduced end d of the journal and being providedwith teeth 0 entering the gaps between similar teeth on the outer faceof the eccentric member I). The end all of the journal a has anon-circular cross-section and the coupling member 6 has a borin ofsimilar section fitting on the end d of the ournal, be-

ingthus prevented from rotating on the end d of the journal.

Obviously, when the coupling member 0 is shifted to the left, its teethwill be disengaged from the teeth of the cam member b and this lattercan then be displaced angularly on the journal. Byshifting member 6 tothe right its teeth will enter the gaps between the teeth of the cammember and will lock same in its new position.

According to the present invention the shifting is effected by means ofthe key f to be described more fully hereinafter and a shifting member2', mounted for rotation in a cylindrical radial boring g of the partcl, a coil spring it being inserted between the bottom end of thecylindrical member z and the bottom of the boring g. is is a cam formedon the cylindrical member i and m is a lateral engagement of thecylindrical boring g, offering room for the cam in. The cavity m islonger than the cam is so that the member a, [man be displaced axiallyin the boring g and cavity m against the action of spring h. At its topend'the member i carries a semi-cylindrical projection 11, which canenter the'radial boring 0 of the coupling member 6. The key 7 isequipped with an eccentric pin 4 projecting from its lower end p. Whenthe key is inserted in the boring o thepin extends into the space at theside of the semi-cylindrical extension n and into a transverse groove Qin the cam In the position shown in the drawings the extension 91. ofthe locking member 71 prevents the coupling member 0 from being shiftedto the left. If the key f is inserted in the boring 0 and is depressedagainst the action of sprin 71., the extension at of member 2' will beforcec entirely into the boring g, whereby the coupling member 6 is nowfree to be shifted to the left. On the key being now turned about itaxis, its extension 9" which is applied against the extension 11. of thelocking member 2', will cause this member to rotate about its axis,whereby the cam is is applied against the wall of the cavity m and nowserves as a pivot for the key f and coupling member 0, whereby thislatter is shifted to the. left. The cam member I) can now be freelyturned on the journal (1 and by turning key f in the oposite directionthe coupling member 6 is returned into its initial position, whereby themember I) is fixed in position on the journal. Instead of using the keyfor returning the member 6, it may also be Withdrawn, and the couplingmember 6 pushed back into coupling position by hand.

I wish it to be understood that I do not desire to be limited to theexact details of construction shown and described for obviousmodifications will occur to a person skilled in the art. 4

In the claims afiixed to this specification no selection of anyparticular modification of the invention is intended to the exclusion ofother modifications thereof and the right to subsequently make claim toany modification not covered by these claims is expressly reserved.

I claim-: H I

{1. Means for coupling a shaft or journajl 'Witha member-surroundingsame, comprising a clutch mounted on said shaft or journaland'securedthereon against angular displacement, but free to be displaced axially,said-clutch being-arranged to engage said member and having a radialboring, said shaft or our-nal having a correspondingradial boring and alaterally projecting cavity, a locking member in said boring, a cam-0nsaid locking member "extending into saidcavity and a key adapted to beinserted in the boring ;in said clutch and to .project into the boringin said shaft or journal for operative engagement with said lockingmember.

2. Means for "adjusting eccentric ipresses comprisinga shaft or journalin said press, an-eccentric mounted-thereon for angulardisplacement,ane'xtensionof non circular crosssection on said shaft or journal nearsaid-eccentric, a clutch fitted on said extension-fo'r free axialdisplacement, said clutch being arranged to engage said eccentric andhavinga radial boring, said extension having a corresponding radialboring and a cavity projecting-laterally from said boring, alocking pinaxially movable in "said boring, a spring tending to force part of saidlocking pin intofthe radialboring of said-clutch, a cam on said pinextending into said-cavity'incontact With-a Wallthereof and a keyfitting inthe'boring in said clutch and ,-projecting into the boring insaid-extension for operative engagement and rotation of said lockingpin.

In testimony whereof I aflix my signature.

-MA-X L'UBICH.

